Analysis of residual products in benzalkonium chloride by high-performance liquid chromatography

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Abstract

A method for the separation of the homologous series of benzalkonium chloride (BAK), benzyl chloride, and possible byproducts is presented. Under recommended conditions, 2 mobile phases (isocratic and gradient elutions, depending on the impurities present) are proposed. A study of the kinetics of the removal of benzyl chloride under different conditions (catalyst, excess of amine, different solvents) allows the synthesis of BAK without residual benzyl chloride.

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Prieto-Blanco, M. C., López-Mahía, P., & Prada-Rodríguez, D. (1999). Analysis of residual products in benzalkonium chloride by high-performance liquid chromatography. Journal of Chromatographic Science, 37(8), 295–299. https://doi.org/10.1093/chromsci/37.8.295

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